This doesn't sound like the action of a virus. You also seem to be well protected from them. I therefore took a quick look at Adobe's support pages click here and these indicate that the problem is most likely due to lack of resources on your computer or your printer's memory was full. You may therefore find it useful to turn off your printer for at leaat 15secs before printing these pages. Or if you have a lot of programs hogging your PC's memory try closing them down or even uninstalling them if they are not needed.